Editing Comb (section)

===Unbreakable plastic comb===
An unbreakable plastic comb is a comb that, despite being made of plastic rather than (more expensive) metal, does not shatter into multiple pieces if dropped on a hard surface such as bathroom tiles, a hardwood floor, or pavement.<ref>{{Cite book |last=Adams |first=Glenn Arthur |url=https://books.google.com/books?id=yO3HbKLNx5EC |title=A Likely Story |publisher=iUniverse |year=2000 |isbn=9780595004294 |language=en |access-date=2016-03-07 |archive-url=https://web.archive.org/web/20161223054634/https://books.google.com/books?id=yO3HbKLNx5EC |archive-date=2016-12-23 |url-status=live}}</ref> Such combs were introduced in the mid-twentieth century.<ref>{{Cite book |last=Division |first=Great Britain Central Office of Information Reference |url=https://books.google.com/books?id=-2UhAQAAIAAJ&q=unbreakable+plastic+comb |title=Home Affairs Survey |year=1951 |language=en}}</ref> Today most plastic combs are unbreakable as technology has reached a point of understanding the causation of brittleness in these products.<ref>{{Cite book |last1=International |first1=A. S. M. |url=https://books.google.com/books?id=RJWiilJLdxYC |title=Characterization and Failure Analysis of Plastics |last2=Lampman |first2=Steve |publisher=ASM International |year=2003 |isbn=9781615030736 |language=en}}</ref>